Description North Carolina Winter CRPS/RSD This is how it feels to me swarming bees & blazing limbs.Complex Regional Pain Syndrome (CRPS) aka Reflex Sympathetic Dystrophy (RSD) is a chronic pain syndrome characterized by severe and relentless pain that affects between 200,000 and 1.2 million Americans & over 5 million worldwide. Descriptions of how it 'feels' to live with RSD/CRPS have been translated into graphic form in the hope it will help others understand what it's like to exist in our world. Descriptions of how it 'feels' to live with RSD/CRPS have been translated into graphic form in the hope it will help others understand what it's like to exist in our world.